Adjusting and limiting device of bag making machine
By designing a sliding baffle and positioning mechanism on the bag-making machine, the problems of lag in plastic film adjustment and cumbersome positioning were solved, achieving simple and fast plastic film adjustment and high-precision positioning, thus improving the quality of bag making.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- RIZHAO YUNSU MASCH MFG CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-24
AI Technical Summary
Existing bag-making machines suffer from lag and cumbersome processes when adjusting and positioning the plastic film, which affects the quality of bag production.
Design an adjustment and limiting device, including a sliding baffle mechanism and a positioning mechanism, to limit the left and right position of the plastic film by the relative movement of the left and right baffles, and to achieve precise adjustment by the positioning mechanism.
It enables simple and quick adjustment and high-precision positioning of plastic film, thus improving bag production quality.
Smart Images
Figure CN224159001U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an adjustment and limiting device for a bag making machine. Background Technology
[0002] This utility model relates to an adjustment and limiting device for a bag making machine, which is installed on the feeding mechanism of the plastic bag making machine. When the width of the plastic film released by the feeding mechanism changes or when the plastic film roll is changed, the left and right positions of the plastic film are limited by adjusting the width of the baffle, and the center distance of the plastic film corresponds to the center distance of the sealing knife of the bag making machine, thus having the functions of adjustment and limiting.
[0003] Existing bag-making machines, including heat-sealing blades and feeding devices (devices for conveying plastic film), employ multiple guide rods in their feeding devices to accommodate the intermittent feeding characteristics. The plastic film can be stored for a certain length as it passes through these guide rods, mitigating the problem of sudden pulling on the film by the feeding mechanism and affecting bag quality. To address adjustment and positioning issues, existing bag-making machines have plastic retaining rings at both ends of each guide rod. During bag making, the width of the plastic film often fluctuates. In such cases, it is generally necessary to manually adjust the positions of the plastic retaining rings at both ends of each guide rod one by one to ensure that the width of the left and right retaining rings matches the plastic film, and that the center distance of the plastic film corresponds to the center distance of the sealing blade. This manual adjustment method is time-consuming, and delays in adjustment can affect bag quality. Designing a simple and timely adjustment limit device is a problem that has been sought after but remains unsolved. Summary of the Invention
[0004] To address the shortcomings of existing technologies, the technical problem to be solved by this utility model is to design an adjustment and limiting device to solve the problems of lagging adjustment and cumbersome positioning of plastic film in existing bag making machines, and to provide an adjustment and limiting device for bag making machines.
[0005] To achieve the above technical objectives, the technical solution of this utility model is: an adjustment and limiting device for a bag making machine, comprising a frame, characterized in that: a sliding baffle mechanism is further provided on the frame, the sliding baffle mechanism comprising a left baffle, a right baffle, and guide rods, and further comprising a positioning mechanism, the plurality of guide rods being horizontally arranged on the frame, the left baffle and the right baffle being provided with guide rod holes, the left baffle and the right baffle being slidably arranged on the guide rods through the guide rod holes, and the positioning mechanism being connected to the left baffle and the right baffle.
[0006] The sliding baffle includes a left baffle and a right baffle. Guide rod holes are provided on the left baffle and the right baffle at positions corresponding to the plurality of guide rods, so as to allow the left baffle and the right baffle to slide on the guide rods.
[0007] As a preferred technical solution, a sliding sleeve is also provided on the left and right baffles.
[0008] As a further improvement, the sliding sleeve is a linear bearing. This design transforms the sliding friction between the guide rod and the guide rod hole into the rolling friction of a linear bearing, reducing the resistance to movement of the left and right baffles on the guide rod and making their movement on the guide rod smoother.
[0009] The positioning mechanism can be a lead screw pair, a positioning screw, or a retaining sleeve. It is used to position the left and right baffles at a certain position on the guide rod.
[0010] As a preferred technical solution, the positioning mechanism is a lead screw pair.
[0011] As a further improvement, the lead screw assembly includes a positive and negative threaded lead screw, a positive threaded nut, and a negative threaded nut, and the positive and negative threaded lead screw is also equipped with a handwheel. This design allows the left and right baffles to move relative to each other simultaneously by turning the handwheel, which is not only convenient to adjust, but also ensures that the center distance of the plastic film corresponds to the center distance of the sealing knife of the bag making machine, resulting in high adjustment accuracy.
[0012] The technical problem actually solved by this utility model is to limit the left and right position of the plastic film by the relative movement of the left and right baffles, and to adapt to the width change of the plastic film by moving the relative position between the left and right baffles. As for other structures of the bag making machine feeding device, these are well known to those skilled in the art and will not be described in detail here.
[0013] The beneficial effects of this utility model are as follows: the relative distance between the left and right baffles can be moved and positioned by the sliding baffle mechanism and the positioning mechanism, so that the plastic film can be centered and adjusted on multiple guide rods at the same time. This is simpler and more convenient than the prior art which requires adjusting the retaining rings one by one, and the centering accuracy is high. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structural principle of Embodiment 1 from the front and side.
[0015] Figure 2 This is a schematic diagram of the structural principle of Embodiment 1 on the left.
[0016] Figure 3 This is a top view schematic diagram of the structural principle of Embodiment 1;
[0017] Figure 4 and Figure 5 This is a schematic diagram illustrating the working principle of Embodiment 1;
[0018] Figure 6 This is a schematic diagram of the structural principle of Embodiment 2.
[0019] In the diagram: 1—Frame; 2—Sliding baffle mechanism; 21—Left baffle; 22—Right baffle; 23—Guide rod hole; 24—Guide rod; 25—Linear bearing; 3—Positioning mechanism; 31—Positive and negative threaded screw; 32—Positive threaded nut; 33—Negative threaded nut; 34—Handwheel; 35—Positioning screw; 4—Plastic film. Detailed Implementation
[0020] To fully disclose this utility model, two embodiments are described below with reference to the accompanying drawings to illustrate the technical solution of this utility model. In the description of this utility model, Figure 1 The left side is the left side described in this utility model. Figure 1 The left and right directions are the left and right directions described in this utility model.
[0021] Example 1, as Figure 1 , Figure 2 , Figure 3 As shown: The positioning mechanism 3 in Embodiment 1 is a lead screw pair, including a positive and negative thread lead screw 31, a positive thread nut 32, a negative thread nut 33, and a handwheel 34; a sliding sleeve is also provided on the left baffle 21 and the right baffle 22, and the sliding sleeve is a linear bearing 25.
[0022] like Figure 1 , Figure 2 , Figure 3 As shown: Two plate-shaped bodies are set as a left baffle 21 and a right baffle 22. Corresponding guide rod holes 23 are set on the left baffle 21 and the right baffle 22 at positions corresponding to multiple guide rods 24. Two linear bearings 25 are installed in the guide rod holes 23 of the left baffle 21 and the right baffle 22 respectively. Guide rods 24 are inserted into the guide rod holes 23 or the linear bearings 25 of the left baffle 21 and the right baffle 22 respectively. A spur nut 32 is installed in the middle position of the left baffle 21. ... Install a reverse-thread nut 33 in the middle position of 2, and install a positive-reverse threaded rod 31 on the positive-thread nut 32 and the reverse-thread nut 33. Then fix the two ends of multiple guide rods 24 on the frame 1, rotate the two ends of the positive-reverse threaded rod 31 on the frame 1, and install a handwheel 34 on one end of the positive-reverse threaded rod 31. By adjusting the positive-thread nut 32 and the reverse-thread nut 33, make the center point between the left baffle 21 and the right baffle 22 correspond to the left and right center points of the bag making machine sealing knife.
[0023] The working process of Example 1 is as follows: Figure 4 As shown, first wrap the plastic film 4 around the multiple guide rods 24, then as... Figure 5As shown, when the handwheel 34 is turned by hand, the left baffle 21 and the right baffle 22 will move relative to each other in the left and right horizontal direction, so that the distance between the left baffle 21 and the right baffle 22 is adapted to the width of the plastic film 4. At this time, the left and right center points of the plastic film 4 correspond to the left and right center points of the sealing knife of the bag making machine. When it is necessary to replace the plastic film roll, or when the width of the plastic film 4 becomes wider or narrower, the handwheel 34 is turned by hand to adapt the distance between the left baffle 21 and the right baffle 22 to the width of the plastic film 4. During the adjustment, only the relative position between the left baffle 21 and the right baffle 22 changes, while the center points of the left and right width of the plastic film 4 remain unchanged and always correspond to the left and right center points of the sealing knife of the bag making machine.
[0024] Example 2, as Figure 6 As shown: The main difference between Example 2 and Example 1 is that the lead screw pair and the linear bearing 25 are omitted.
[0025] like Figure 6 As shown: Guide rod holes 23 are respectively provided at the positions corresponding to the multiple guide rods 24 on the left baffle 21 and the right baffle 22. At least two positioning screws 35 are provided at the positions of the guide rod holes 23 on the left baffle 21 and the right baffle 22. Then, the multiple guide rods 24 are inserted into the corresponding guide rod holes 23, and then the two ends of the multiple guide rods 24 are respectively fixedly installed on the frame 1.
[0026] The specific working process of Example 2 is as follows: Figure 6 As shown, manually move the left baffle 21 and the right baffle 22 so that the relative distance between the left baffle 21 and the right baffle 22 is equal to or close to the width of the plastic film 4, and make the center distance between the left baffle 21 and the right baffle 22 correspond to the center distance of the sealing knife of the bag making machine. When it is found that the plastic film 4 becomes narrower or wider during the bag making process, first loosen the positioning screws 35 on the left baffle 21 and the right baffle 22, then manually move the left baffle 21 and the right baffle 22 left and right. After moving the left baffle 21 and the right baffle 22 to the appropriate position, tighten the positioning screws 35 respectively.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. An adjustment and limiting device for a bag-making machine, comprising a frame (1), characterized in that: A sliding baffle mechanism (2) is also provided on the frame (1). The sliding baffle mechanism (2) includes a left baffle (21), a right baffle (22), and multiple guide rods (24). It also includes a positioning mechanism (3). The multiple guide rods (24) are arranged laterally on the frame (1). The left baffle (21) and the right baffle (22) are provided with guide rod holes (23). The left baffle (21) and the right baffle (22) are slidably arranged on the guide rods (24) through the guide rod holes (23). The positioning mechanism (3) is connected to the left baffle (21) and the right baffle (22).
2. The adjusting and limiting device for a bag-making machine according to claim 1, characterized in that: The positioning mechanism (3) is a lead screw pair.
3. The adjusting and limiting device for a bag-making machine according to claim 2, characterized in that: The lead screw assembly includes a positive and negative thread lead screw (31), a positive thread nut (32), and a negative thread nut (33), and a handwheel (34) is also provided on the positive and negative thread lead screw (31).
4. The adjusting and limiting device for a bag-making machine according to claim 1, characterized in that: Sliding sleeves are also provided on the left baffle (21) and right baffle (22).
5. The adjusting and limiting device for a bag-making machine according to claim 4, characterized in that: The sliding sleeve is a linear bearing (25).